In this work an experimentation was carried out by computer simulation in order to observe the biomechanical behavior of the mandibular short - bone implant system type II due to the variation of the coronal height, length and diameter of the implant. For this study, each of the variables was combined: diameter of the implant (4.2, 5 and 6 mm), height (6 and 8 mm) and crown-implant ratio (1: 1, 1.5: 1, 2: 1 and 2,5: 1) obtaining a total of 24 configurations of the system, each of these configurations underwent two load conditions that simulate masticatory forces; axial load of 200 N distributed in the four cusps of the molar and a load of 100 N divided into the two lingual cusps with a 45 ° inclination. As a result it was obtained that for configurations of crown-implant ratio 2: 1 the trabecular bone can be structurally affected if diameters smaller than 6 mm are used.